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葡萄白腐病多在雨季发生,葡萄园若染上此病且碰上多雨的高温高湿天气将加剧危害,若防治不及时,将造成葡萄毁灭性病灾而严重减产。葡萄白腐病多发生在果穗、新梢和叶片上。果穗得病后,穗轴上出现水渍状浅褐色长条病斑,果实先呈水渍状浅褐色斑点,后迅速蔓延至全果粒,并在果粒上密生许多灰白色小点,造成葡萄严重落粒,未落粒则干枯成猪肝色僵果悬挂;叶片得病后,
Grape white rot occurs mostly in the rainy season. If the vineyard is infected with the disease and encounters rainy high temperature, high humidity and wet weather, it will aggravate the damage. If the prevention and treatment are not implemented in time, grapes will be severely damaged by the devastating disease. Grape white rot occurs in the ears, shoots and leaves. After the ear was sick, there was a water stain on the cob on the long brownish brown spot. The fruit showed a light brownish spot first, and then spread rapidly to the whole fruit. Many small white dots appeared on the fruit, causing serious grapes Falling tablets, non-falling grains dried fruit into a blue color of fruit hanging; leaf sick,